YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1913 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 34.48 | b | 24.74 | 29.61 | j | |
1914 | 9.60 | a | -5.27 | d | 20.02 | a | 33.53 | 55.57 | a | 64.57 | a | 71.12 | g | 64.79 | 57.50 | a | 48.47 | 25.54 | e | 5.32 | 34.51 | a | ||||
1915 | 3.78 | a | 17.21 | 23.87 | a | 51.03 | 50.43 | q | 56.67 | a | 63.21 | 64.11 | 57.25 | f | 45.37 | 29.08 | ----- | z | 39.37 | c | ||||||
1916 | ----- | z | ----- | z | 16.05 | 38.33 | a | 50.05 | 58.02 | 75.12 | a | 64.66 | 54.00 | a | 40.81 | 28.41 | b | ----- | z | 47.27 | c | |||||
1917 | ----- | z | ----- | z | 18.57 | a | 32.92 | 49.97 | a | 57.10 | 67.55 | a | 63.34 | 55.75 | 35.32 | a | 32.32 | b | 1.74 | 41.46 | b | |||||
1918 | -2.87 | 10.35 | b | 29.58 | 40.53 | a | 53.76 | 64.97 | 67.65 | 64.98 | d | 49.02 | c | 45.87 | a | 35.22 | a | 16.57 | b | 39.63 | ||||||
1919 | 13.52 | 10.52 | a | 21.12 | a | 39.77 | 56.11 | 69.33 | 71.45 | 66.47 | 56.48 | 40.47 | 26.55 | -2.76 | b | 39.09 | ||||||||||
1920 | -1.43 | b | 7.83 | 25.29 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 10.56 | i | ||
1921 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1922 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1923 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1924 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1925 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1926 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1927 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1928 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1929 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1930 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1931 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1932 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1933 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1934 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1935 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1936 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1937 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1938 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1939 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1940 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1941 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1942 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1943 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1944 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1945 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1946 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1947 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1948 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1949 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1950 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1951 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1952 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1953 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1954 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1955 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1956 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1957 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1958 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1959 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 71.83 | v | 66.89 | 54.97 | 39.42 | 15.65 | 18.60 | b | 39.11 | g | ||||
1960 | 7.52 | 9.76 | 14.71 | 37.42 | 52.66 | 59.28 | 65.94 | 66.00 | 55.37 | 43.40 | 28.65 | 6.97 | 37.31 | |||||||||||||
1961 | 2.39 | 16.29 | 27.95 | 35.12 | 49.74 | 63.02 | 66.61 | 66.45 | 54.30 | 44.11 | 27.47 | 11.60 | 38.75 | |||||||||||||
1962 | -0.61 | 4.02 | 25.61 | 34.93 | 53.26 | 60.43 | 62.76 | 63.35 | 52.75 | 45.02 | 30.83 | 10.06 | 36.87 | |||||||||||||
1963 | -3.77 | 1.41 | 23.27 | 39.62 | 48.11 | 63.22 | 67.11 | 62.13 | 57.07 | 54.23 | 32.65 | 4.16 | 37.43 | |||||||||||||
1964 | 12.05 | 11.03 | 16.11 | 37.85 | 55.44 | 60.32 | 69.02 | 60.05 | 52.00 | 42.50 | 27.85 | 3.94 | 37.35 | |||||||||||||
1965 | 0.53 | 1.18 | 13.39 | 37.05 | 52.35 | 59.77 | 62.97 | 61.90 | 47.12 | 43.78 | a | 25.70 | 18.82 | 35.38 | ||||||||||||
1966 | -4.69 | 8.80 | 25.29 | 33.57 | 45.44 | 62.85 | 69.61 | 62.48 | 55.28 | 41.92 | 22.97 | 8.60 | 36.01 | |||||||||||||
1967 | 4.84 | -1.95 | 22.50 | 35.85 | 46.32 | 61.23 | 64.92 | 61.69 | 56.35 | 41.13 | 24.07 | 13.39 | 35.86 | |||||||||||||
1968 | 5.63 | 5.91 | 28.66 | 38.80 | 49.00 | 59.62 | 64.55 | 62.39 | 56.15 | 45.42 | 28.08 | 9.50 | 37.81 | |||||||||||||
1969 | 5.45 | 11.48 | 19.18 | 40.28 | 51.35 | 53.70 | 65.66 | 68.21 | 55.88 | 38.40 | 26.20 | 15.60 | 37.62 | |||||||||||||
1970 | -0.19 | 6.52 | 18.32 | 37.24 | a | 47.40 | 63.33 | 69.39 | 66.08 | 55.68 | 43.77 | 26.38 | 10.26 | 37.02 | ||||||||||||
1971 | -3.98 | 10.21 | 19.24 | 37.80 | 48.56 | 64.23 | 63.13 | 62.98 | 56.95 | 46.98 | 26.22 | 11.15 | 36.96 | |||||||||||||
1972 | -3.76 | 3.71 | 17.77 | a | 34.47 | a | 57.77 | 62.23 | 63.76 | 64.52 | a | 50.70 | 39.56 | 25.09 | a | 4.47 | 35.02 | |||||||||
1973 | 10.45 | 11.70 | 32.84 | 38.05 | 50.92 | 61.57 | 66.15 | 66.98 | 54.62 | a | 48.11 | 26.55 | 9.13 | a | 39.76 | |||||||||||
1974 | 2.65 | 7.18 | 18.94 | 38.32 | 47.13 | 60.83 | 69.55 | 62.26 | 48.77 | 43.16 | 27.95 | 19.11 | 37.15 | |||||||||||||
1975 | 8.21 | 10.33 | a | 17.66 | 32.58 | 55.58 | 62.47 | 70.73 | 64.00 | 51.48 | 45.89 | 30.00 | 8.82 | a | 38.15 | |||||||||||
1976 | 2.97 | 17.76 | 19.69 | 42.73 | 52.60 | a | 65.12 | 67.42 | 67.08 | a | 54.73 | 37.25 | a | 20.53 | 0.13 | 37.33 | ||||||||||
1977 | -4.06 | 12.62 | 30.42 | 43.55 | 61.42 | 61.87 | 67.60 | 58.73 | 54.05 | 44.05 | 26.75 | 8.77 | 38.81 | |||||||||||||
1978 | 0.31 | 4.29 | 21.05 | 36.82 | 54.95 | a | 61.20 | 65.10 | 65.05 | 57.45 | 44.72 | a | 24.28 | 4.55 | 36.65 | |||||||||||
1979 | -4.74 | 2.38 | 21.85 | 34.23 | 46.71 | 59.82 | 67.67 | a | 62.13 | 55.95 | 40.03 | 25.47 | a | 17.90 | 35.78 | |||||||||||
1980 | 5.52 | 8.78 | 18.22 | a | 40.68 | 57.34 | 60.68 | 67.77 | 65.00 | 53.26 | a | 38.65 | 27.48 | 7.75 | a | 37.59 | ||||||||||
1981 | 7.55 | 14.82 | 27.33 | a | 40.38 | 52.92 | 61.42 | 68.24 | 67.08 | 54.17 | a | 40.82 | 34.66 | a | 12.89 | 40.19 | ||||||||||
1982 | -5.87 | d | 8.34 | 19.85 | d | 34.47 | ----- | z | 56.46 | b | 67.60 | 61.06 | 54.53 | a | 44.74 | 23.46 | c | 17.00 | a | 34.70 | a | |||||
1983 | 10.12 | a | 17.56 | b | 26.37 | a | 35.95 | a | 48.00 | d | 60.17 | c | 71.81 | b | 69.70 | d | 56.90 | a | 42.85 | d | 28.28 | -2.14 | c | 38.80 | ||
1984 | 1.87 | e | 23.57 | b | 18.55 | 42.93 | b | 50.27 | a | 62.76 | a | 67.23 | c | 69.41 | b | 52.42 | 47.03 | a | 27.74 | a | 10.47 | b | 39.52 | |||
1985 | 2.70 | c | 6.72 | a | 28.74 | b | 41.38 | a | 56.57 | c | 57.11 | b | 65.59 | b | 62.41 | b | 54.50 | 43.12 | b | 17.31 | c | 2.11 | 36.52 | |||
1986 | 10.75 | c | 10.08 | b | 27.70 | a | 43.09 | b | 56.11 | 61.54 | c | 67.38 | c | 61.12 | a | 53.00 | e | 42.23 | c | 21.50 | c | 16.06 | d | 39.21 | ||
1987 | 15.88 | g | 23.98 | a | 29.96 | c | 46.15 | c | 55.33 | a | 64.38 | a | 68.24 | b | 63.48 | d | 56.47 | a | 38.67 | d | ----- | z | ----- | z | 49.63 | c |
1988 | 1.56 | f | 4.27 | c | 22.48 | c | 37.90 | d | 57.93 | b | 67.74 | g | 70.00 | c | 65.00 | b | 54.83 | a | 38.02 | b | 26.56 | c | 9.26 | b | 38.62 | b |
1989 | 10.55 | c | 1.24 | a | 16.98 | 35.42 | d | 53.15 | d | 60.24 | a | 69.81 | 64.43 | a | 55.05 | 43.98 | a | 20.52 | -0.48 | 35.91 | ||||||
1990 | 14.03 | 9.82 | 25.89 | 38.67 | 49.03 | 62.07 | a | 66.69 | 67.45 | 56.62 | 40.95 | 29.40 | a | 8.27 | 39.07 | |||||||||||
1991 | 2.10 | 16.41 | 25.31 | 43.22 | 58.02 | b | 66.08 | 65.37 | a | 68.19 | 52.88 | 38.42 | a | 20.86 | a | 13.52 | a | 39.20 | ||||||||
1992 | 12.61 | 17.83 | 24.10 | 35.22 | 54.75 | e | 58.64 | b | 59.93 | a | 60.60 | b | 53.88 | b | 40.10 | a | 24.52 | a | 11.11 | d | 37.77 | |||||
1993 | 6.10 | a | 11.07 | a | 26.29 | b | 36.50 | c | 51.56 | e | 58.46 | d | 64.07 | d | 66.31 | d | 49.94 | c | 37.80 | a | 22.02 | d | 12.90 | a | 36.92 | |
1994 | -7.38 | b | 6.32 | c | 26.75 | a | 37.71 | b | 54.12 | e | 64.17 | d | 65.05 | c | 62.27 | g | 55.68 | k | 47.11 | q | 29.86 | l | 18.78 | o | 35.25 | e |
1995 | 10.58 | l | 5.50 | k | 24.05 | l | 32.06 | m | 49.08 | k | 70.28 | l | ----- | z | ----- | z | 46.60 | o | ----- | z | ----- | z | ----- | z | ----- | z |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 3.43 | 9.40 | 22.70 | 38.34 | 52.49 | 61.27 | 66.98 | 64.41 | 54.22 | 42.60 | 26.47 | 9.74 | 37.65 | |||||||||||||
S.D. | 6.06 | 6.38 | 4.83 | 3.83 | 3.88 | 3.00 | 2.90 | 2.60 | 2.50 | 3.68 | 4.29 | 6.37 | 1.38 | |||||||||||||
SKEW | 0.04 | 0.17 | 0.09 | 1.00 | 0.07 | 0.00 | 0.21 | 0.03 | -1.04 | 0.58 | -0.18 | 0.02 | 0.03 | |||||||||||||
MAX | 14.03 | 23.98 | 32.84 | 51.03 | 61.42 | 69.33 | 75.12 | 69.70 | 57.50 | 54.23 | 35.22 | 24.74 | 40.19 | |||||||||||||
MIN | -7.38 | -5.27 | 13.39 | 32.58 | 45.44 | 53.70 | 59.93 | 58.73 | 47.12 | 35.32 | 15.65 | -2.76 | 35.02 | |||||||||||||
YRS | 38 | 40 | 42 | 41 | 39 | 40 | 40 | 41 | 40 | 41 | 41 | 39 | 33 |